Diff: BufferSerial.h

Revision:

6:17e3a28338dc

Child:

7:0bc2bc07f2fe

diff -r aef6f39b9683 -r 17e3a28338dc BufferSerial.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BufferSerial.h	Sat Nov 28 07:48:16 2020 +0000
@@ -0,0 +1,49 @@
+#ifndef BUFFER_SERIAL_H
+#define BUHHER_SERIAL_H
+
+//  include
+#include "mbed.h"
+
+#ifndef SERIAL_RX_BUFFER_SIZE
+//  RX Buffer Max Size
+#define SERIAL_RX_BUFFER_SIZE 128
+#endif
+
+#if  (SERIAL_RX_BUFFER_SIZE>256)
+typedef uint16_t rx_buffer_index_t;
+#else
+typedef uint8_t rx_buffer_index_t;
+#endif
+
+class BufferSerial : public RawSerial
+{
+public:
+    //  constructor
+    BufferSerial(PinName tx, PinName rx,int baud,int timeout);
+    
+    //  function of arduino serial
+    int available(void);
+    //  return number of bytes available to read.
+    int read(void);
+    //  return first byte of incoming data available (or -1 if no data is available)
+    size_t readBytesUntil(char charactor,char *buffer,int length);
+    //  return number of bytes placed in the buffer
+    
+    unsigned char _rx_buffer[SERIAL_RX_BUFFER_SIZE];
+private:
+    //  rx buffer array
+    //unsigned char _rx_buffer[SERIAL_RX_BUFFER_SIZE];
+    //  head index
+    volatile rx_buffer_index_t _rx_buffer_head;
+    volatile rx_buffer_index_t _rx_buffer_tail;
+    int timer_ms;
+    //  attach rx
+    void serial_rx(void);
+    
+    int timedRead();
+    Timer timer;
+    unsigned long _timeout;      // number of milliseconds to wait for the next char before aborting timed read
+    unsigned long _startMillis;  // used for timeout measurement
+};
+
+#endif